Amana M8 Installation Instructions Manual page 24

Inlet
Pressure
Tap
Gas Valve On/Off
Selector Switch
Honeywell Model VR8215 (Single-Stage)
1. Turn OFF gas to furnace at the manual gas shutoff valve
external to the furnace.
2. Turn OFF all electrical power to the system.
3. Inlet pressure tap connections:
a. Honeywell Valve:
Remove the inlet pressure Tap plug. Install an 1/8" NPT
hose barb fitting into the outlet pressure tap.
b. White-Rodgers valve:
Back inlet pressure test screw (inlet pressure Tap out one
turn (counterclockwise, not more than one turn).
4. Attach a hose and manometer to the outlet pressure barb
fitting (Honeywell valve) or inlet pressure Tap White-
Rodgers valve).
5. Turn ON the gas supply.
6. Turn On power and close thermostat "R" and "W" contacts
to provide a call for heat.
7. Using a leak detection solution or soap suds, check for
leaks at outlet pressure Tap plug (Honeywell valve) or screw
(White-Rodgers valve). Bubbles forming indicate a leak.
SHUT OFF GAS AND REPAIR ALL LEAKS IMMEDIATELY!
8. Measure the gas supply pressure with burners firing. Adjust
supply pressure using the Inlet Gas Supply Pressure table
shown below. If supply pressure reading differs from the
table, make necessary adjustments to pressure regulator,
gas piping size, etc., and/or consult with local gas utility.
INLET GAS SUPPLY PRESSURE
Natural Gas Minimum: 4.5" w.c.
Propane Gas Minimum: 11.0" w.c.
9. Turn OFF all electrical power and gas supply to the system.
10. Remove the manometer hose from the hose barb fitting or
inlet pressure Tap.
11. Replace inlet pressure tap:
a. Honeywell valve:
Remove the 1/8" NPT hose barb fitting from the inlet
pressure tap. Replace the inlet pressure Tap plug and
seal with a high quality thread sealer.
b. White-Rodgers valve:
Turn inlet pressure test screw in to seal pressure port
(clockwise, 7 in-lb minimum).
12. Retest for leaks. If bubbles form, shut down gas and repair
leaks immediately.
Pressure Regulator
(under cap screw)
Outlet
Pressure
Tap
Maximum: 10.0" w.c.
Maximum: 13.0" w.c.
13. Turn ON electrical power and gas supply to the system.
14. Turn valve switch ON.
M T S
ODELS USING WO TAGE
T
O PREVENT UNRELIABLE OPERATION OR EQUIPMENT DAMAGE
GAS MANIFOLD PRESSURE MUST BE AS SPECIFIED ON THE UNIT RATING
. O
PLATE NLY MINOR ADJUSTMENTS SHOULD BE MADE BY ADJUSTING
THE GAS VALVE PRESSURE REGULATOR
NOTE: When removing a valve adjustment screw or a pressure
Tap, use a T-25 Torx or 3/616" flathead screwdriver. DO NOT USE
POWER TOOLS.
The line pressure supplied to the gas valve must be within the
range specified below. The supply pressure can be measured at
the gas valve inlet pressure Tap or at a hose fitting installed in the
gas piping drip leg. The supply pressure must be measured with
the burners operating. To measure the gas supply pressure, use
the following procedure.
INLET
Gas Valve On/Off
Selector Switch
White-Rodgers Model 36J54 (Two-Stage)
Open to
Atmosphere
Outlet
Pressure Boss
Inlet
Pressure
TAP
White-Rodgers Model 36J54 Connected to Manometer
24
G V
AS ALVES
CAUTION
.
OUTLET
High Fire Regulator
Adjust
Regulator
Low Fire
Regulator
Adjust
Common
Terminal(C)
,
THE
Vent